Improvement in watches



E. J. PACAU D.

. Watch.

No. 168,774. Patented Oct. 11,1875.

W/fiwmmg I .[IWPJ far ymm/ @m/ /f i N-PETERS, PHUTO-LITNOGRAPHER,WASHINGTON D C UNITED AT S PATENT QFFIGE.

FLORENTINE A. JONES, OF SAME PLACE.

IMPROVEMENT: IYN WATCHEIS.

Specification forming part of Letters Patent No. 168,774, dated October11, 1875; application filed June 30, 1873.

CAsn A.

To all whom it may concern:

Be it known that I, EUGENE J. PACAUD, of Schaffhausen, Switzerland, haveinvented certain Improvements in Watches, of which the following is aspecification:

Figure 1 of the accompanying drawings is a front view of my invention.Figs. 2 and 4 are vertical sections, and Fig. 3 is a perspective view ofparts, in detail, of the same at an enlarged scale.

The present invention relates to certain new and useful improvements instem-winding and stem-setting watches, having for their principal objectthe simplifying and perfect ing of the mechanism by which the Breguetratchet of stem-winding watches is shifted to allow the setting of thehands.

My invention consists, mainly, in the means employed for attaching anangle-lever, which acts on the spring-arm of the'Breguet ratchet to awatch-case, all of which I will now proceed to describe and point out inmy claim.

In the drawings, (t represents a pillar-plate, and b the top plate of awatch. Pivoted to the pillar'plate a is a spring-lever, f, curved andarranged, as shown, to hold and allow the action of an angle-lever,g,,,turnin g in the pillar-plate a on a fulcrum-screw, h, which isformed with a shoulder or flange, h, that rests on the plate I).

The angle-lever g is formed as shown, and provided at one end with aprojecting pin or stem, '5, Fig. 3, that fits into a groove, 10, Fig. 4,formed in the winding-arbor 1, so that when screwed down the screw hserves as a fulcrum to the lever g, which also holds the winding-arbor lin position by means of the pin or stem working in the slot or groove 70of the winding-arbor l, on which is located a Breguet ratchet, m.

The operation of my invention is as follows: By drawing out thewinding-arbor Z, in whose groove is the stem t of the angle-lever 9works, the angle'lever g is brought to hear at one end against the spring-lever f, so as to carry the point of the latter inward, and engage theBreguet ratchet m, with whose groove the point of the lever engages withthe wheel or pinion operating the hand-setting train, and by pushing inthe arbor Z the pin or stem i is brought to bear on it so as to actuatethe lever-arm g, and reverse the action of the spring-lever f, and allowthe Breguet ratchet m to go back to its original position, so as todisconnect it from the hand-setting train, and allow the movement of thearbor l for the winding operation. 4

By the above description, reference being had to the accompanyingdrawings, it will be seen that the angle-lever g, being formed, asshown, with its stem t and fulcrum-screw It, serves the double purposeof the usual yoke, for retaining the winding-arbor in place,

and of the shifting-lever for operating the v shifting of the Breguetratchet. The movement, being thus simplified, is, therefore, moreeconomical, and less liable to displacement than the ordinary methods inuse.

Moreover, by the formation of the fulcrumscrew it with its flange h adouble bearing is secured, the end shake is easily regulated, and thefulcrum or angle-lever g is held rigidly in place, so as to serve asonepiece with the screw 71. Besides, by the arrangement of the flange h,when the screw h is unscrewed it raises the angle-lever g out of thegroove 70 of the winding-arbor l, thus allowing the latter to bewithdrawn-and replaced without disturbing the hands or dial.

The screw h is threaded only at its inner end, where it passes throughthe angle-lever, the threaded portion being of less diameter than theplain or smooth portion, as shown in Fig. 2; hence, when the screw isturned in one direction it brings the lever into its place, and whenturned in the opposite direction it automatically forces the lever fromits place, 7

thus disengaging the lever from the stem, and enabling both to beremoved. The pin t of the angle-lever g, engaging with the groove 70 ,ofthe winding-arbor, prevents the latter from being withdrawn from thewatch until the angle-lever is loosened. The screw it of theangle-lever, therefore, holds both the lever and the winding-arbor.

Having thus fully described my improvements, what I claim as myinvention, and de- In testimony whereof I have signed my name sire tohave secured to me by Letters Patent to this specification in thepresence of two subis v scribing Witnesses.

The screw it, threaded at its inner end, and provided with the flange h,the latter being EUGENE J. PACAUD. located between the dial and topplate of a Watch, in combination with the elbow-lever Witnesses: g,substantially as described, and for the pur- F. A. JONES, posespecified. S. M. BYERS.

